Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Grab the pre-computed resource and map using of_ioremap().
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Similarly to irq_of_parse_and_map(), find the platform_device
object and return the pre-computed resource.
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

gas used to accept (and ignore?) .size directives which referred to
undefined symbols, as this does.  In binutils 2.21 these are treated
as errors.
Signed-off-by: NBen Hutchings <ben@decadent.org.uk>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Most of the warnings emitted (we fail arch/sparc file
builds with -Werror) were legitimate but harmless, however
one case (n2_pcr_write) was a genuine bug.

Based almost entirely upon a patch by Sam Ravnborg.
Reported-by: NDennis Gilmore <dennis@ausil.us>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

entry.S access percpu + global data defined in
sun4m_irq.c - so move the types to irq.h.
This makes sparse happy and allow us to utilize
asm-offsets later.

Also updated a few comments in the sun4m_irq.c file.
Signed-off-by: NSam Ravnborg <sam@ravnborg.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

build_device_irq() is used to encapsulate the plaform
specific details when we build an irq.
For now the default is a simple 1:1 but sun4d differs.
This patch refactors functionality - but does not change
the existing functionality.
Signed-off-by: NSam Ravnborg <sam@ravnborg.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

sparc_irq_config is used to hold the platform specific irq setup.
Signed-off-by: NSam Ravnborg <sam@ravnborg.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Add a few includes back required to build with floppy enabled
Fix declaration of trapbase_cpu* so it is now consistent
Signed-off-by: NSam Ravnborg <sam@ravnborg.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This converts the sparc clocksources to use clocksource_register_hz/khz
Signed-off-by: NJohn Stultz <johnstul@us.ibm.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

A recent patch to the x86 randomization code caused me to take
a quick look at what we do on sparc64, and in doing so I noticed
that we sometimes calculate a non-page-aligned randomization value
and stick it into mmap_base.

I also noticed that since I copied the logic over from PowerPC,
the powerpc code has tweaked the randomization ranges in ways that
would benefit us as well.

For one thing, we should allow up to at least 8MB of randomization
otherwise huge-page regions when HPAGE_SIZE is 4MB never randomize
at all.

And on the 64-bit side we were using up to 4GB.  Tone it down to
1GB as 4GB can result in a lot of address space wastage.

Finally, make sure all computations are unsigned.
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

- drop filename in file header
- drop unused includes
- add KERN_* to printk
- fix spaces => tabs
- add spaces after reserved words
- drop all externs, they are now in header files
Signed-off-by: NSam Ravnborg <sam@ravnborg.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This looked like a bug to me.
Add a comment so next reader is hopefully less confused.
Signed-off-by: NSam Ravnborg <sam@ravnborg.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The preprocessor symbol was not defined and the code
was therefore not in use.
Signed-off-by: NSam Ravnborg <sam@ravnborg.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

- drop filename in file header
- drop unused includes
- add description of sun4d interrupts (from davem)
- add KERN_* to printk
- fix spaces => tabs
- add spaces after reserved words
- fix indent of a whole code block in smp4d_boot_one_cpu()
  Note: two printk() was updated from debug to KERN_INFO in this code block
- drop all externs, they are now in header files

This is partly based on a patch from: David Miller <davem@davemloft.net>
Signed-off-by: NSam Ravnborg <sam@ravnborg.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

- drop filename in file header
- drop unused includes
- add description of sun4m interrupts (from davem)
- add KERN_* to printk
- fix spaces => tabs
- add spaces after reserved words
- drop all externs, they are now in header files

This is partly based on a patch from: David Miller <davem@davemloft.net>
Signed-off-by: NSam Ravnborg <sam@ravnborg.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

- drop filename in header
- drop unused includes
- add description of sun4c interrupts (from davem)
- add spaces after reserved words

This is partly based on a patch from: David Miller <davem@davemloft.net>
Signed-off-by: NSam Ravnborg <sam@ravnborg.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

In preparation for cleaning up a number of files add
declarations for irq and smp related data/functions to
the relevant headers.

This showed that the extern declaration of cputypval differed
in the two files where it was used.
As cputypval is defined like this:

cputypval:
        .asciz "sun4c"

the correct representation is a char array.
Fix users to use the new declaration.
Signed-off-by: NSam Ravnborg <sam@ravnborg.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The two methods included in tick14.c was nop because
the static variable linux_lvl14 was always NULL.

So remove the file and callers.
Signed-off-by: NSam Ravnborg <sam@ravnborg.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Signed-off-by: NDaniel Hellstrom <daniel@gaisler.com>
Acked-by: NSam Ravnborg <sam@ravnborg.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The way a LEON is powered down is implemented differently depending
on CHIP type. The AMBA Plug&Play system ID tells revision of GRLIB
and CHIP.

This is for example needed by the GR-LEON4-ITX board and the UT699.

Previously the power down support for LEON was limited to SMP, now
both SMP and UP systems use the instruction.
Signed-off-by: NDaniel Hellstrom <daniel@gaisler.com>
Acked-by: NSam Ravnborg <sam@ravnborg.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The generic irq support uses the term 'irq' for the
allocated irq number.
Fix it so sparc64 use the same term for an irq as the
generic irq support does.
For a naive reader this is less confusing.
Signed-off-by: NSam Ravnborg <sam@ravnborg.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The generic irq support uses the term 'irq' for the
allocated irq number.
Fix it so sparc64 use the same term for an irq as the
generic irq support does.
For a naive reader this is less confusing.
Signed-off-by: NSam Ravnborg <sam@ravnborg.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Drop all uses of deprecated genirq features.

The irq_set_affinity() call got a third paramter 'force'
which is unused.
For now genirq does not use this paramter and it is
ignored by sparc.
Signed-off-by: NSam Ravnborg <sam@ravnborg.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Josip Rodin <joy@entuzijast.net>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

{get,set}_irq_data uses the member "handler_data" in irq_data
which fits the naem of the datatype.
The change has no functional impact
Signed-off-by: NSam Ravnborg <sam@ravnborg.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

In preparation of moving to use irq_data.handler_data rename
all pointers to irq_handler_data "handler_data".
This will also prevent name clash when we introduce the
new irq methods.
Signed-off-by: NSam Ravnborg <sam@ravnborg.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The generic irq support uses "irq" to identify the
virtual irq number. To avoid confusion rename the
argument to handler_irq() to pil to match the
name of the parameter in the PCR register.
Signed-off-by: NSam Ravnborg <sam@ravnborg.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

GENERIC_HARDIRQS_NO_DEPRECATED require us to access data via irq_data.
No functional changes as data has same layout due to use of union
Signed-off-by: NSam Ravnborg <sam@ravnborg.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Order of kfree and free_pages were swapped in the error handling.
Signed-off-by: NKristoffer Glembo <kristoffer@gaisler.com>
Acked-by: NSam Ravnborg <sam@ravnborg.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Signed-off-by: NKristoffer Glembo <kristoffer@gaisler.com>
Acked-by: NSam Ravnborg <sam@ravnborg.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Signed-off-by: NKristoffer Glembo <kristoffer@gaisler.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This patch sets the dma_ops structure for LEON. It reuses the pci32_dma_ops.
Signed-off-by: NKristoffer Glembo <kristoffer@gaisler.com>
Acked-by: NSam Ravnborg <sam@ravnborg.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Signed-off-by: NKristoffer Glembo <kristoffer@gaisler.com>
Acked-by: NSam Ravnborg <sam@ravnborg.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Signed-off-by: NKristoffer Glembo <kristoffer@gaisler.com>
Acked-by: NSam Ravnborg <sam@ravnborg.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Get rid of old users of of_platform_driver in arch/sparc.  Most
of_platform_driver users can be converted to use the platform_bus
directly.
Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>

Doing NMI startup as an early initcall doesn't work because we need
to have SMP started up by then.

So we'd only NMI startup one cpu, which causes perf PMU grab to
BUG because the nmi_active count isn't what it's supposed to be.

This also points out that we don't have proper CPU up/down notifiers
for the NMI code which will need to be fixed at some point.
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

iommu_alloc_ctx() finds a zero bit in iommu->ctx_bitmap.  It starts
searching from iommu->ctx_lowest_free to the end of the bitmap.
But the size argument to find_next_zero_bit() in iommu_alloc_ctx()
is wrong.  It should be the bitmap size, not the maximum size to
search from the offset argument.

Fortunately iommu->ctx_lowest_free is almost unused and it will not
be more than 1. So the bug wasted only 1-bit at the end of
iommu->ctx_bitmap.
Signed-off-by: NAkinobu Mita <akinobu.mita@gmail.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: sparclinux@vger.kernel.org
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Since commit f0e98c38 ("[SPARC]: Fix
link errors with gcc-4.3") the MNA trap handler does not emulate
stores to unaligned addresses correctly. MNA operation from both
kernel and user space are affected.

A typical effect of this bug is nr_frags in skbs are overwritten
during buffer copying/checksum-calculation, or maximally 6 bytes
of data in the network buffer will be overwitten with garbage.
Signed-off-by: NDaniel Hellstrom <daniel@gaisler.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

xtime_update() takes the xtime_lock itself.

pcic_clear_clock_irq() and clear_clock_irq do not need
to be protected by xtime_lock.
Signed-off-by: NTorben Hohn <torbenh@gmx.de>
Acked-by: NDavid S. Miller <davem@davemloft.net>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: johnstul@us.ibm.com
Cc: hch@infradead.org
Cc: yong.zhang0@gmail.com
LKML-Reference: <20110127150022.23248.80369.stgit@localhost>
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>

Currently percpu readmostly subsection may share cachelines with other
percpu subsections which may result in unnecessary cacheline bounce
and performance degradation.

This patch adds @cacheline parameter to PERCPU() and PERCPU_VADDR()
linker macros, makes each arch linker scripts specify its cacheline
size and use it to align percpu subsections.

This is based on Shaohua's x86 only patch.
Signed-off-by: NTejun Heo <tj@kernel.org>
Cc: Shaohua Li <shaohua.li@intel.com>